Rule 8.3 - RIO TINTO Limited

FORM 8.3

    DEALINGS BY PERSONS WITH INTERESTS IN SECURITIES REPRESENTING 1% OR MORE
              (Rule 8.3 of the City Code on Takeovers and Mergers)


1.   KEY INFORMATION

Name of person dealing        BARCLAYS PLC
(Note 1)
Company dealt in              RIO TINTO LIMITED
Class of relevant security    NPV
to which the dealings being
disclosed relate (Note 2)
Date of dealing               18 September 2008

2.   INTERESTS, SHORT POSITIONS AND RIGHTS TO SUBSCRIBE

(a)  Interests and short positions (following dealing) in the class of relevant
security dealt in (Note 3)

                            Long                     Short

                      Number       (%)         Number       (%)

(1) Relevant      13,669,402      2.99%       302,175      0.07%
securities
(2) Derivatives       13,144      0.00%        18,685      0.00%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total             13,682,546      3.00%       320,860      0.07%


(b)  Interests and short positions in relevant securities of the company, other
     than the class dealt in (Note 3)

Class of                    Long                     Short
relevant
security:

                  Number              (%)   Number              (%)

(1) Relevant
securities

(2) Derivatives
(other than
options)

(3) Options and
agreements to
purchase/sell

Total


  (c)  Rights to subscribe (Note 3)

Class of relevant security:   Details



3.   DEALINGS (Note 4)

  (a)  Purchases and sales

Purchase/sale Number of Securities Price per unit
                                   (GBP)
Purchase      2,402                98.4100 AUD
Purchase      2,004                98.2274 AUD
Purchase      52,700               98.4304 AUD
Purchase      78,921               97.8157 AUD
Purchase      3,231                98.9583 AUD
Purchase      12,500               98.5475 AUD
Purchase      78,921               97.8157 AUD
Purchase      5,791                98.4001 AUD
Purchase      1,817                98.4000 AUD
Purchase      466                  98.4000 AUD
Purchase      512                  98.4000 AUD
Sale          4                    99.3000 AUD
Sale          1,500                97.9004 AUD
Sale          656                  98.4000 AUD
Sale          78,921               97.8157 AUD
Sale          14,902               98.5253 AUD
Sale          56,862               102.0000 AUD
Sale          38,616               102.0000 AUD
Sale          1,800                98.9086 AUD
Sale          29,645               102.0000 AUD
Sale          8,694                98.4000 AUD
Sale          2,402                98.4100 AUD
Sale          108                  98.4000 AUD
Sale          539                  98.4000 AUD
Sale          58,078               97.1403 AUD
Sale          3,095                98.4000 AUD
Sale          1,817                98.4000 AUD
Sale          12,500               98.5475 AUD

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          1500          97.9003
CFD            Long          1800          98.9086
CFD            Long          4             99.3
CFD            Short         12195         104.0959
CFD            Short         2004          98.2274
CFD            Short         52700         98.4304
CFD            Short         3231          98.9583

(c)  Options transactions in respect of existing securities

(i)  Writing, selling, purchasing or varying

Product name,   Writing,          Number of          Exercise  Type, e.g.      Expiry   Option money
e.g. call       selling,          securities to      price     American,       date     paid/received
option          purchasing,       which the option             European etc.            per unit (GBP)
                varying etc.      relates (GBP)


(ii) Exercising

Product name, e.g.  Number of           Exercise price per
call option         securities          unit (Note 5)




(d)  Other dealings (including new securities) (Note 4)


Nature of transaction Details           Price per unit
(Note 8)                                (if applicable)
                                        (Note 5)




4.   OTHER INFORMATION
None

Agreements, arrangements or understandings relating to options or derivatives


Full details of any agreement, arrangement or understanding between the
person disclosing and any other person relating to the voting rights of
any relevant securities under any option referred to on this form or
relating to the voting rights or future acquisition or disposal of any
relevant securities to which any derivative referred to on this form is
referenced.  If none, this should be stated.




Is a Supplemental Form 8 attached? (Note 9)                 NO


Date of disclosure                         19 September 2008
Contact name                               Geoff Smith
Telephone number                           020 7116 2913
If a connected EFM, name of
offeree/offeror with which connected
If a connected EFM, state nature of
connection (Note 10)


Notes

The Notes on Form 8.3 can be viewed on the Takeover Panel's website at
www.thetakeoverpanel.org.uk